867920198 has 4 divisors (see below), whose sum is σ = 1301880300. Its totient is φ = 433960098.

The previous prime is 867920197. The next prime is 867920219. The reversal of 867920198 is 891029768.

It is a semiprime because it is the product of two primes.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (867920191) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 216980048 + ... + 216980051.

It is an arithmetic number, because the mean of its divisors is an integer number (325470075).

Almost surely, 2^867920198 is an apocalyptic number.

867920198 is a deficient number, since it is larger than the sum of its proper divisors (433960102).

867920198 is a wasteful number, since it uses less digits than its factorization.

867920198 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 433960101.

The product of its (nonzero) digits is 435456, while the sum is 50.

The square root of 867920198 is about 29460.4853659949. The cubic root of 867920198 is about 953.8789502528.

The spelling of 867920198 in words is "eight hundred sixty-seven million, nine hundred twenty thousand, one hundred ninety-eight".